Since we have to prepare for the migration of our traditional PBX to an VoIP infrastructure we just started gathering basic knowledge on VoIP communication principles and product specific features. Since we do not have access to an test environment we completely rely on official documentation or on comments of experienced users.
I am trying to understand the impact of active calls and calls on hold on the number of available call slots of phones participation in a shared line appearance.
Does an active call or a call on hold reduce the number of available call slots on all phones participating in a shard line or only on the phone which executes the call?
Let's consider two phones using both a shared line (line 1 with DN 1). The settings of both phones is as follows :
Phone 1: Max_number-of-Calls: 2; Busy trigger: 2
Phone 2: Max_number-of-Calls: 1; Busy trigger: 1
Let's assume one active call on phone 1. Phone 2 then displays the status âremote in useâ for the shared line (line 1). Does the status âremote in useâ occupy the only available call slot on phone 2 or is this call slot still available for other calls?
What about a call on hold, is the behavior of a caal on hold regarding the occupied call slots in a shared lien appearance similar or different to an active call?
It seems you have a better grasp of this than the document we were looking at :)
I just tried this exact setup in the lab and when this scenario is tested only phone 3 is ringing on the second call. Both 1 & 2 are unavailable to take the new call.
I think the best way to go here is to follow the Cisco "best practice"
Cisco recommends that the same value be configured for the maximum number of calls for all shared-line MCID devices.
Hope this helps!